We're chatting about why he left.
We're talking about why he left.
Please clarify why he left.
It's not clear why he left.
Why he left made me laugh.
(I have) no idea why he left.
I understand nothing about why he left.
The discovery of why he left saddened me.
I don't know where Ralu went.
I know why she isn't here.
Tell me why you're angry.
It's not known whether this heavy boat will float or sink.
They requested the where-is-Jake answer.
(They wanted to know where Jake is.)
Neytiri explained to Jake how to behave in that situation.
In the meantime, brothers and sisters, please follow the new guidelines and rules. Stay home as often as possible. Wash your hands many (times a day). Keep back a bit from other people. And if you know older folks, whether in your family or as friends, contact them to find out if they're well.
The leader has heard your protest and will decide what must be done.
I wanted to tell you about two new members of John's and my family. They're two little cats named Palu and Lukan. They're brother and sister. I think you can understand what source those two names come from. It's clear, isn't it?
Snubbing isn't helpful, brother. If you're angry, explain why.
Yes, the Skypeople love exploration, but they don't know what to do once they find something.
The answer (to the question) who wants to leave doesn't matter, tell them to please stay.
(No matter who wants (or: may want to leave, tell them to please stay.))
I can't understand why her singing gets worse when I listen.
My crossbow has mysteriously disappeared. I don't know where it is.
That confusing explanation didn't help me understand what I have to do.
Unfortunately you don't understand how complex this problem is.
Success depends on whether or not one follows instructions.
I don't know where they're going.
It's not clear why they left.
I asked where Neytiri was going.